Macro signatory::digest::generic_array::arr

macro_rules! arr {
    ( $ T : ty ; $ ( , ) * ) => { ... };
    (
$ T : ty ; $ ( $ x : expr ) , * $ ( , ) * ) => { ... };
    (
$ ( $ x : expr , ) + ) => { ... };
    (  ) => { ... };
}

Macro allowing for easy generation of Generic Arrays. Example: let test = arr![u32; 1, 2, 3];